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The examination to become a London cabby is possibly the most difficult test in the world — demanding years of study to memorize the labyrinthine city’s 25,000 streets and any business or landmark on them. As GPS and Uber imperil this tradition, is there an argument for learning as an end in itself?

Which is where the Knowledge comes in. It is a weird city’s weird solution to the riddle of itself, a municipal training program whose graduates are both transit workers and Gnostics: chauffeurs taught by the government to know the unknowable.

The brains of London taxi drivers have attracted scholarly attention. Eleanor Maguire, a neuroscientist at University College London, has spent 15 years studying cabbies and Knowledge boys. She has discovered that the posterior hippocampus, the area of the brain known to be important for memory, is bigger in London taxi drivers than in most people, and that a successful Knowledge candidate’s posterior hippocampus enlarges as he progresses through the test.

The current problem is, in part, an unintended consequence of previous efforts to aid the environment.The British government provided financial incentives to encourage a shift to diesel engines because laboratory tests suggested that would cut harmful emissions and combat climate change. Yet, it turned out that diesel cars emit on average five times as much emissions in real-world driving conditions as in the tests, according to a British Department for Transport study.

In 2012, David Strayer found himself in a research lab, on the outskirts of London, observing something he hadn’t thought possible: extraordinary multitasking. For his entire career, Strayer, a professor of psychology at the University of Utah, had been studying attention—how it works and how it doesn’t. Methods had come and gone, theories had replaced theories, but one constant remained: humans couldn’t multitask. Each time someone tried to focus on more than one thing at a time, performance suffered. Most recently, Strayer had been focussing on people who drive while on the phone. Over the course of a decade, he and his colleagues had demonstrated that drivers using cell phones—even hands-free devices—were at just as high a risk of accidents as intoxicated ones. Reaction time slowed, attention decreased to the point where they’d miss more than half the things they’d otherwise see—a billboard or a child by the road, it mattered not.

For anyone who has endured clichéd, condescending, uncomprehending, or otherwise aggravating depictions of classical music in American TV ads—the snobs at the symphony, the sopranos screaming under Valkyrie helmets, the badly edited bowdlerizations of the “Ode to Joy”—a new ad for the Apple iPad featuring the conductor and composer Esa-Pekka Salonen may come as a pleasant shock. It is, first of all, a cool, elegant piece of work—not surprising, given Apple’s distinguished history of television propaganda. Salonen is shown receiving inspiration for a passage in his Violin Concerto and trying it out in his iPad; then, after a montage of scenes in London and Finland, we see the violinist Leila Josefowicz and the Philharmonia Orchestra, of London, digging in to the score. More notably, it is musical: the concerto dictates the rhythm of the editing, and the correlation between notation and sound is made excitingly clear.

An exhibition at the British Library in London reveals the importance that visualising data has had on the scientific process – from 19th Century ship logs that still influence climate science, to models used to forecast the 2009 influenza pandemic.These images not only aid scientific progress, but also help to change the world.

The Nonhuman Rights Project is the only organization working toward actual LEGAL rights for members of species other than our own. Our mission is to change the common law status of at least some nonhuman animals from mere “things,” which lack the capacity to possess any legal right, to “persons,” who possess such fundamental rights as bodily integrity and bodily liberty, and those other legal rights to which evolving standards of morality, scientific discovery, and human experience entitle them. Our first cases were filed in 2013.

But now experts say a reliance on sat-navs and smartphone map apps is undermining map-reading skills. So here are five reasons why you should love maps and resist the easy attraction of the sat-nav.

But before it fell, the wall did something that most people never think of: It created a massive laboratory for studying human society.Imagine this: If you were a researcher trying to determine how a political system affects people’s values, beliefs, and behavior, you would ideally want to take two identical populations, separate them for a generation or two, and subject them each to two totally different kinds of government. Then you’d want to measure the results, the same way a medical researcher might give two sets of patients two different pills and then track their progress.Ethically, such a study would be unthinkable even to propose. But when the Berlin Wall went up in 1961, it created what London School of Economics associate professor Daniel Sturm calls a “perfect experiment.”

The researchers - Peera Wongupparaj, Veena Kumari and Robin Morris at Kings College London - did not themselves ask anyone to sit an IQ test, but they analysed data from 405 previous studies. Altogether, they harvested IQ test data from more than 200,000 participants, captured over 64 years and from 48 countries. Focusing on one part of the IQ test, the Raven's Progressive Matrices, they found that on average intelligence has risen the equivalent of 20 IQ points since 1950. IQ tests are designed to ensure that the average result is always 100, so this is a significant jump.

Thankfully, most of this Jew-targeted hatred takes the form of verbal aggression rather than physical violence. But because many critics of Israel make no distinction between citizens of the Jewish state and the worldwide Jewish community, the J-word has been the focus. You won't see "Kill Israelis" scrawled on London synagogue walls. What you see on walls is "Kill the Jews", and on banners "Hitler was Right". And this brings me back to the point about the complexity of anti-Semitism today. It is always around and in the end it is focused primarily on the J-word, in the same way that another form of racism is focused on the N-word. Those on the receiving end find their lives shaped by it. Certainly my life, my sense of myself, has been shaped by the casual anti-Semitism that I have encountered for more than half a century. The first time I was called a "Jew" with malicious intent was September 1958 in the playground of Belmont Hills Elementary School, in the suburbs of Philadelphia. It came as a surprise. I was eight years old and up until that time had been living in New York City where everyone I encountered was Jewish. Until that moment, the word "Jew" had simply been one of the words and phrases - like "Mike", "son" and "114 East 90th Street" - whose meanings were slowly building up into a sense of who I was.

Today it is safe to say there are no unknown territories with dragons. However, it’s not quite true to say that every corner of the planet is charted. We may seem to have a map for everywhere, but that doesn’t mean they are complete, accurate or even trustworthy.For starters, all maps are biased toward their creator’s subjective view of the world. As Lewis Carroll famously pointed out, a perfectly objective and faithful 1:1 representation of the world would literally have to be the same size as the place it depicted. Therefore, mapmakers must make sensible design decisions in order to compress the physical world into a much smaller, flatter depiction. Those decisions inevitably introduce personal biases, however, such as our tendency to place ourselves at the centre of the world. “We always want to put ourselves on the map,” says Jerry Brotton, a professor of renaissance studies at Queen Mary University London, and author of A History of the World in 12 Maps. “Maps address an existential question as much as one that’s about orientation and coordinates.“We want to find ourselves on the map, but at the same time, we are also outside of the map, rising above the world and looking down as if we were god,” he continues. “It’s a transcendental experience.”

After the Charlie Hebdo attack, a Paris imam went to the scene and condemned the murders. "These victims are martyrs, and I shall pray for them with all my heart," said Hassen Chalghoumi (above). He was also quoted as saying that 95% of victims of terrorism are Muslim. How accurate is this statistic?

A new artwork painted by artist Banksy on the treatment of people in the Calais camp known as the Jungle has been removed from a site in Knightsbridge, London opposite the French Embassy. Before its removal, Google decided to preserve it digitally for its Cultural Institute Project and Street View to allow other people to see the work.